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Comprehensive recovery method for reelected tailings of stannic oxide ore

A technology for gravity separation of tailings and recovery methods, applied in chemical instruments and methods, improvement of process efficiency, solid separation and other directions, can solve problems such as restricting the economic development of mining areas, secondary pollution and dam area risks threatening the safety of mining areas, etc. Alleviating the scarcity of mineral resources, obvious economic and social benefits, and the effect of environmental governance

Inactive Publication Date: 2013-02-13
池煊庆
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Problems solved by technology

However, a large number of stockpiled tin oxide ore gravity separation tailings seriously endanger the ecological environment of the ancient mining area and restrict the economic development of the mining area. At the same time, the potential secondary pollution of the tailings and the risk of the dam area threaten the safety of the mining area

Method used

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Embodiment Construction

[0008] After wet grinding, filtering and drying the tailings of tin oxide ore, add calcium oxide and ammonium chloride, and then chlorinate and reduce roasting in a roasting kiln to obtain magnetic iron ore powder and dust. Among them, the magnetic iron ore powder is magnetically separated Qualified iron ore powder is obtained, and the dust is absorbed by water cooling to comprehensively recover copper, tin, zinc, molybdenum, bismuth, indium, and silver.

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Abstract

The invention provides a comprehensive recovery method for reelected tailings of stannic oxide ore, and relates to a recovery method of metal waste residue. The method comprises the following steps of: carrying out wet type grinding, filtering and drying on the reelected tailings of stannic oxide ore to prepare calcium oxide and ammonium chloride, and carrying out oxidation reduction roasting in a roasting kiln after curing to obtain magnetic iron-containing mineral powder and smoke. The edible ore power can be obtained by means of magnetic concentration, and the nonferrous metals and the rare metals can be obtained by means of water-cold absorption. According to the method, the pollution can be treated, the waste material can be recycled, the pollution can be controlled, the mineral resource lack can be alleviated, and the safety risk of a tailings dam can be reduced, so that the comprehensive recovery method is obvious in economic meaning and social meaning.

Description

technical field [0001] The invention relates to a recovery method of metal waste slag, in particular to a recovery method of tin oxide ore gravity separation tailings. Background technique [0002] Tin oxide ore gravity separation tailings contain about 25% iron, and contain ferrous metals and rare precious metals. However, a large number of stockpiled tin oxide ore gravity separation tailings seriously endanger the ecological environment of the ancient mining area and restrict the economic development of the mining area. At the same time, the potential secondary pollution of the tailings and the risk of the dam area threaten the safety of the mining area. Previously, the applicant proposed two invention patents, "Comprehensive Recovery Method of Pyrite Cinder" (Patent No. ZL200510021005) and "Comprehensive Recovery Method of Blast Furnace Lead Smelting Waste Slag" (Application No. 2010101443719). The purpose is to recover non-ferrous metal and ferrous metal resourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B1/08B03C1/015C22B11/00C22B15/00C22B17/00C22B25/00C22B30/06C22B58/00
CPCY02P10/20
Inventor 池煊庆
Owner 池煊庆
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